Question

(3sqrt(cos^2x-1))*(1-cos^2x) / (sqrt(sinx)) = 0

Answer 1

3sqrt(cos^2(x-1))*(cos^2(x)-1)/(sqrt(sin(x))=0

=> sinx =/ 0 => x=/Pn , x принадлежит (0;P]

    sinx >0

cos(x-1)=0     x=P/2 + pn - 1 = P/2 - 1              P=3.14=180gr

cosx=1          x= 2Pn = {0}

cosx=-1         x= P + 2Pn = P

Решение : x = (P/2 - 1), P